toj_2977.cpp

Tianjin University Online Judge 的80多道题目 .

#include<cstdio>
#include<cstring>
int main()
{
    int i , j , n , len , yellow , red , win;
    char str[ 20 ];
    while( scanf( "%d" , &n ) && n ){
        scanf( "%s" , str );
        len = strlen( str );
        yellow = red = 0;
        win = -1;
        for( i = 0; i < len && win == -1 ; i++ )
            switch( str[ i ] ){
            case 'B':
                if( red == 7 )
                    win = 0;
                else
                    win = 1;
                break;
            case 'L':
                if( yellow == 7 )
                    win = 1;
                else
                    win = 0;
                break;
            case 'Y':
                yellow++;
                break;
            case 'R':
                red++;
                break;
            default:
                printf( "error!" );
            }
        if( win == 0 )
            printf( "Red\n" );
        else
            printf( "Yellow\n" );
    }
    return 0;
}